Murray,
Opinions are always subjective, mine being no exception. I refer more to the material that John Allen produced in his early years than what he would be doing today. While his technical ability may be less than some, his instinct to impart "blas" into the music ranks him higher than many others, who have a more refined style. He can express that elusive element that few can master. It is for instance, easy to stepdance to his tunes and that makes him an exception. After all we are talking about celtic music and "blas" becomes an important element in my opinion.
There is an expression in Cape Breton that the best dance fiddlers play with "a bit of dirt on the bow". In any case he plays it with a bit of dirt on a thumbpick. Sometimes I judge music with my feet. As great a player as Tony McManus is he can't get my toes tapping like John Allen can.
                         Obie